Qoppa Software has announced the release of an Android-based PDF application for viewing and marking-up PDF documents. qPDF Notes can also be used to complete interactive PDF forms, including XFA forms.
The product's annotation functionality allows users to add graphical marks, text comments, and sticky notes. Meanwhile, the application also supports pinch and spread zoom and continuous page view.
qPDF Notes is compatible with Android 3.0, and integrates with Email, Drop Box, and Blue Tooth enabling users to freely access and save PDF documents in and out of the device.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.